This article highlights common mistakes developers make with Core Data. It also touches on Core Data’s benefits, terminology, versioning, migration, performance, and iCloud integration pitfalls and how you can avoid them.

Core Data is an Apple framework for Mac and iOS, which primarily allows you to persist data. For a lot of people, it has a steep learning curve. This means that without the right approach it can be difficult to understand, let alone master. This leads developers to make common mistakes that can otherwise be easily avoided. This article outlines each mistake, and then goes on to explain how you can avoid making them yourself.
1. Not Knowing the Key Terminology

Learning Core Data is an essential part of being an iOS Developer. Most iOS Apps couldn’t exist without it. As you poke around the Internet searching for tutorials to learn Core Data, it’s easy to become intimidated by all the new terminology. In fact, most articles assume you already know the terminology, and yet if you don’t, you’re in for a world of confusion. So let’s get the key terminology straight. Here’s a high level cheat-sheet you can use for reference as you learn Core Data, which shows the key terms: